On Fri, Aug 23, 2002 at 01:54:44AM +0000, beaker wrote:
> 
> >  From my recollection of many years ago, some SCSI devices (at the time
> > I was using an Epson GT-series SCSI scanner) flag Unit Attention after
> > power-on reset. The SCSI driver I was writing detected this and
> > automatically did a Check Condition, after which the device resets Unit
> > Attention and works normally (so what you are observing is probably
> > completely normal). My recollection may be a little inaccurate however,
> > and I can't think of the reason for this device behaviour offhand.
> 
> Opps - I left off some of the dmesg stuff. The complete "cd0" message is
> below:
> 
> 
>  *** Selected output from dmesg ***
> 
>  cd0 at scsibus0 target 5 lun 0: <COMPAQ, CD-ROM CR-503BCQ, 1.1c> SCSI2 5/cdrom removable
> 
>  cd0(esp0:5:0):  Check Condition on CDB: 0x43 00 00 00 00 00 00 00 0c 40
> 
> cd0(esp0:5:0):  Check Condition on CDB: 0x43 00 00 00 00 00 00 00 0c 40
>     SENSE KEY:  Illegal Request
>     ASC/ASCQ:  Illegal Field in CD

The driver sends a READ_TOC command, which doesn't seem to be supported by
this drive. I don't think it's something to worry about.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
--